Earlier leaks have already shown us the UI of the device to some extent. However, according to the latest alleged screenshots of the device, it will be sporting a 4.86-inch display excluding the space taken by the virtual buttons. While the overall size of the device is speculated to be 5.2-inch full HD display with 480ppi pixel density.

Most probably the handset will be powered by a 2.3GHz Qualcomm MSM8974AB SoC. Apart from that the alleged screenshots of the 'Sirius' also shows a 3GB of RAM, 20.7MP rear camera with G Lens, and 2.1MP front camera. Recollecting the purported UI leaked by XDA member iRimas, the device then ran on Android 4.3operating system. But that is supposed to be the prototype model. While the phone is in fact, expected to launch with Android KitKat.

The device is expected to make the debut at the Mobile World Congress (MWC) 2014 which is slated for next month. If the leaked pictures and screenshots gets materialized soon, than the Sirius or D6503 from Japan based tech firm Sony will surely take on other monster flagships of this year, like the Galaxy S5 from Samsung and HTC M8 as well.